Characteristics | Prior to the COVID-19 pandemic (1 March 2019–31 August 2019) | During the COVID-19 pandemic (1 March 2020–31 August 2020) | P valuea |
---|---|---|---|
Number of cases, n (%) | 43(100.0) | 7(100.0) | Â |
Age, median (IQR), m | 35(17.0–67.0) | 6(5.0–14.0) | 0.003* |
Gender, n (%) | Â | Â | 0.819 |
 Male | 24(55.8) | 3(42.9) |  |
 Female | 19(44.2) | 4(57.1) |  |
Hospital stay, median (IQR), d | 11(9.0–14.0) | 12(9.0–29.0) | 0.528 |
Season of hospitalization, n (%) | Â | Â | 0.405 |
 Spring (Mar.-May.) | 29(67.4) | 3(42.9) |  |
 Summer(Jun.-Aug.) | 14(32.6) | 4(57.1) |  |
Bacterial infections, n (%) | Â | Â | 0.541 |
 No | 38(88.4) | 5(71.4) |  |
 Yes | 5(11.6) | 2(28.6) |  |
Viral infections, n (%) | Â | Â | 0.308 |
 No | 26(60.5) | 6(85.7) |  |
 Yes | 10(23.3) | 0(0.0) |  |
Mp infection, n (%) | Â | Â | 0.448 |
 No | 17(39.5) | 5(71.4) |  |
 Yes | 19(44.2) | 2(28.6) |  |
Mixed infections, n (%) | Â | Â | 0.943 |
 No | 26(60.5) | 5(71.4) |  |
 Yes | 10(23.3) | 1(14.3) |  |
Serum sIgE(IU/ml), n (%) | Â | Â | Â |
 House dust mite |  |  | 1.000 |
  < 0.35 | 23(53.5) | 1(14.3) |  |
  ≥ 0.35 | 8(18.6) | 1(14.3) |  |
 Milk |  |  | 1.000 |
  < 0.35 | 21(48.8) | 2(28.6) |  |
  ≥ 0.35 | 10(23.3) | 0(0.0) |  |
 Egg white |  |  | 1.000 |
  < 0.35 | 27(62.8) | 2(28.6) |  |
  ≥ 0.35 | 4(9.3) | 0(0.0) |  |
 Shrimp |  |  | 1.000 |
  < 0.35 | 30(69.8) | 2(28.6) |  |
  ≥ 0.35 | 1(2.3) | 0(0.0) |  |
 Crab |  |  | 1.000 |
  < 0.35 | 30(69.8) | 2(28.6) |  |
  ≥ 0.35 | 1(2.3) | 0(0.0) |  |
Micronutrient levels | Â | Â | Â |
 Vitamin A(umol/l) |  |  | 1.000 |
  < 0.52 | 2(4.7) | 0(0.0) |  |
  0.52–2.2 | 17(39.5) | 1(14.3) |  |
 Vitamin B1(nmol/l ) |  |  | - |
  < 50 | 0(0.0) | 0(0.0) |  |
  50–150 | 19(44.2) | 1(14.3) |  |
 Vitamin B2(ug/l) |  |  | 1.000 |
  < 200 | 2(4.7) | 0(0.0) |  |
  ≥ 200 | 17(39.5) | 1(14.3) |  |
 Vitamin B6(umol/l) |  |  | 0.050* |
  < 14.6 | 0(0.0) | 1(14.3) |  |
  14.6–72.9 | 19(44.2) | 0(0.0) |  |
 Vitamin C(umol/l) |  |  | 0.150 |
  < 34 | 2(4.7) | 1(14.3) |  |
  34–114 | 17(39.5) | 0(0.0) |  |
 Serum 25(OH)D(nmol/l) |  |  | - |
  < 50 | 0(0.0) | 0(0.0) |  |
  ≥ 50 | 19(44.2) | 1(14.3) |  |
 Zn(umol/l) |  |  | 0.429 |
  < 9.2 | 12(27.9) | 0(0.0) |  |
  9.2–22.9 | 8(18.6) | 1(14.3) |  |
 Ca(mmol/l) |  |  | 1.000 |
  < 2.0 | 9(20.9) | 0(0.0) |  |
  2.0-2.74 | 11(25.6) | 1(14.3) |  |